# A tibble: 6 × 3
aggregate compaction strength
<fct> <fct> <dbl>
1 basalt static 68
2 basalt static 63
3 basalt static 65
4 basalt regular 126
5 basalt regular 128
6 basalt regular 133
[1] "basalt" "siliciou"
[1] "low" "regular" "static" "verylow"